CommuniGate Pro, a product by Stalker, has been found to contain a vulnerability that allows remote attackers to cause the server to crash, causing a Denial of Service attack against the host.
Credit:
The information has been provided by: Nobuo Miwa.
Immune systems:
CommuniGate Pro 3.2b5 for NT
CommuniGate Pro 3.2b7 for NT
Exploit:
1. Connect to port 8010 (http configuration from remote browser).
2. Send 70000 'a' characters and then a new line character.
3. Connect to any port other than the CommuniGate port, for example, to connect to port 25, run: "telnet server 25".
4. The server crashes with "Access violation".